[BSDCert] recertification

[Evan Leibovitch]

FWIW,

LPI set a fixed time of 10 years for re-certification, and this was 
acceptable to NOCA. The intent was that a refresher exam, one that only 
tested objectives that changed during the decade, would be offered by 
the time anyone would need to re-take.

Think hard about how much changes in BSD from year to year that would 
make a difference in an admin exam. How different would a sysadmin exam 
of today be from one covering the same general subjects ten years ago?

Also: you can't track recertification to release numbers without biasing 
in favour of one flavor. If  the cert tracks FreeBSD releases, what does 
that say about the relevance of the release schedule of OpenBSD? If this 
was the "FreeBSD Certification" the answer would be easier, but it's not.

- Evan